In brief:
Swelling from Arthr.

Arthritis often causes varying degrees of swelling within the knee joint.

Recurrent swelling is one of the early signs that leads your physician to suspect a diagnosis of arthritis. Not all swollen knees have arthritis, but most knees with arthritis have periods of obvious swelling.

In brief:
Swelling from Arthr.

Arthritis often causes varying degrees of swelling within the knee joint.

Recurrent swelling is one of the early signs that leads your physician to suspect a diagnosis of arthritis. Not all swollen knees have arthritis, but most knees with arthritis have periods of obvious swelling.
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In brief:
See below

Osteoarthritis is a common cause of knee swelling without inflammation was well as injuries to the knee cartilage. One can have bleeding into the knee following injuries with resultant swelling.
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